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Question #4 Carbohydrates are made of what three elements? Carbon, hydrogen, oxygen (C, H, and O)

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Question #5 In the chemistry lab, for safety reasons, when a concentrated acid is mixed with water: –W. the water is always added to the acid –X. the acid is always added to the water –Y. these can only be mixed at cold temperatures –Z. these can never be mixed

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Question #5 In the chemistry lab, for safety reasons, when a concentrated acid is mixed with water: –W. the water is always added to the acid –X. the acid is always added to the water –Y. these can only be mixed at cold temperatures –Z. these can never be mixed

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Question #6 It is estimated that each person in the United States consumes an average of 100 pounds of sucrose each year. Which two simple sugars are linked to make a sucrose molecule?

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Question #6 It is estimated that each person in the United States consumes an average of 100 pounds of sucrose each year. Which two simple sugars are linked to make a sucrose molecule? Glucose and Fructose

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Question #12 Name the two most abundant elements in the universe. Hydrogen and Helium (H and He)

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Question #13 Fish in an aquarium require oxygen to live, which is usually done by pumping air into the fish tank using a mechanical pump. If all other things remain constant, the most effective transfer of oxygen to water comes from: –W. small bubbles of air –X. large bubbles of air –Y. bubbling of cold air –Z. slow bubbling of air

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Question #13 Fish in an aquarium require oxygen to live, which is usually done by pumping air into the fish tank using a mechanical pump. If all other things remain constant, the most effective transfer of oxygen to water comes from: –W. small bubbles of air –X. large bubbles of air –Y. bubbling of cold air –Z. slow bubbling of air

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Question #14 Under which of the following conditions will iron rust: –W. in water –X. in water and oxygen –Y. in oil –Z. in oil and water

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Question #14 Under which of the following conditions will iron rust: –W. in water –X. in water and oxygen –Y. in oil –Z. in oil and water

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Question #15 In order to compare two different gas samples, scientists use what is called the STP. What does STP stand for?

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Question #15 In order to compare two different gas samples, scientists use what is called the STP. What does STP stand for? Standard Temperature and Pressure (0°C or 273 K and 1 ATM or 760 mm Hg)